在C語言中,可以使用abs函數(shù)來求一個(gè)整數(shù)的絕對(duì)值。
#include <stdio.h>
#include <stdlib.h>
int main() {
int num = -5;
int absolute = abs(num);
printf("The absolute value of %d is %d\n", num, absolute);
return 0;
}
輸出結(jié)果為:
The absolute value of -5 is 5
對(duì)于浮點(diǎn)數(shù)的絕對(duì)值,可以使用fabs函數(shù)。
#include <stdio.h>
#include <math.h>
int main() {
float num = -3.14;
float absolute = fabs(num);
printf("The absolute value of %.2f is %.2f\n", num, absolute);
return 0;
}
輸出結(jié)果為:
The absolute value of -3.14 is 3.14